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REMINDER - Sanju Gupta BNC-PQSEI Seminar Today!
by Araji, Sandy Salem 02 Sep '22

02 Sep '22

Dear All - Please be advised of an upcoming seminar that might be of interest to you by Dr. Sanju Gupta, Department of Materials Science and Engineering ,Penn State University, University Park. Date : Friday 9/02/2022 Time: 11:00am‐12:00 pm, 9/02/2022, Friday In Person: BRK_1001 Zoom Link: https://purdue-edu.zoom.us/j/97238777347 Topic : Quantum materials for energy storage and conversion: graphene-based multifunctional hybrids Best, Sandy Araji

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Sanju Gupta BNC-PQSEI Seminar Friday 9/2
by Araji, Sandy Salem 01 Sep '22

01 Sep '22

Dear All - Please be advised of an upcoming seminar that might be of interest to you by Dr. Sanju Gupta, Department of Materials Science and Engineering ,Penn State University, University Park. Date : Friday 9/02/2022 Time: 11:00am‐12:00 pm, 9/02/2022, Friday In Person: BRK_1001 Zoom Link: https://purdue-edu.zoom.us/j/97238777347 Topic : Quantum materials for energy storage and conversion: graphene-based multifunctional hybrids Best, Sandy Araji

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David Mandrus seminar Zoom link
by David Stewart 26 Aug '22

26 Aug '22

Hi all, We have set up a Zoom link for David Mandrus's seminar for those that can't attend in person (today at 3:30 in PHYS 203). Zoom link here: https://purdue-edu.zoom.us/j/97954252911 The title of his seminar is "Getting Carried Away with Topological Materials". More info here: https://www.physics.purdue.edu/events/condensed-matter-seminars/index.html Thanks, David David J. Stewart, Ph.D. Managing Director, Purdue Quantum Science and Engineering Institute (PQSEI) Industry Liaison Officer, Center for Quantum Technologies (CQT, a NSF IUCRC) Birck Nanotechnology Center | 1205 West State Street | Room 1287C | West Lafayette, IN 47907 o: 765-496-3117<tel:7654963117> | davidstewart(a)purdue.edu<mailto:davidstewart@purdue.edu> | www.purdue.edu/dp/quantum<http://www.purdue.edu/dp/quantum> *Follow us! Twitter: @PurdueQuantum<https://twitter.com/PurdueQuantum>, LinkedIn<https://www.linkedin.com/company/pqsei/>, Facebook<https://www.facebook.com/QuantumPurdue> [8A5592F8]<https://www.purdue.edu/>

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Pico-Seminar: Prof. Stephan Haas, University of Southern California, LA
by Abrol, Sangeeta Saddul 25 Aug '22

25 Aug '22

Sent on behalf of Prof. Zubin Jacob and Sathwik Bharadwaj Dear All - Please find attached details of our next speaker, Dr. Stephan Haas from University of Southern California, LA. The talk will be live streamed and posted on our YouTube channel: https://www.youtube.com/channel/UCAwzWog7PqFw5R0q90KI6KQ Prof. Haas is an expert in quantum information theory and unconventional superconductivity. He will discuss an exciting new prediction of topological edge plasmons in Quantum Many-Body systems. Please join us online on Friday August 26th at 10 am EST. If anyone would like to join the discussion after the seminar, please email me at sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu>. Thanks! Regards, Sathwik Bharadwaj Zubin Jacob ------------------------------------------------------------------------------------------------------------------------------ Sathwik Bharadwaj Postdoctoral Research Associate Birck Nanotechnology Center Purdue University, West Lafayette, IN 47906 Email: sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu> ------------------------------------------------------------------------------------------------------------------------------

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BNC News: Week of August 22nd
by Abrol, Sangeeta Saddul 22 Aug '22

22 Aug '22

Seminars /Workshops / Events / Announcement [cid:image002.png@01D8B3E0.BBE25C50] Announcement: Dear Birck Research Community, Recently we had an air handling situation whereby the heat and humidity in one of our lab wings was elevated due to an air handler being off-line for repair. With the high heat and humidity in the lab wing it was necessary to open doors to the affected labs to try to promote some level of cooling from the hallway. The air handler issue was fixed within a couple of days and the A/C returned to normal in the labs. As a reminder, propping doors open is strictly against our policy under all normal conditions. Additionally, entering a lab without swiping in with your own card is also strictly against our policies. We rely on our card-swipe and equipment-use income to support and fund our operation. Anyone who enters a lab without swiping their card, or who enters a lab using someone else’s card, or who knocks on a lab door and is admitted by someone already in the lab is falsifying use of the lab. This will lead to disciplinary action up to and including dismissal from the university. Please use your cards responsibly in our research facility. Birck Management Buffered Oxide Etch Concentration Change We were notified by our BOE supplier, VWR, that they are discontinuing their 6:1 solution but will continue stocking & selling the 5:1 solution. We have two cases left of the 6:1 but will start ordering the 5:1 for future use at Birck. Please note the etch rate change per this comparison table: [cid:image004.png@01D8B3BF.33698B30] Safety: Dear Birck Users, Birck and Bindley are moving to an ANSI-compliant safety glasses policy in our labs. What this means is that prescription glasses that aren’t ANSI Z87.1 compliant will no longer be allowed for work in Birck labs or the cleanroom. Either ANSI-compliant safety glasses currently supplied to labs or ANSI-compliant prescription glasses are required to be worn to enter the laboratory. Verbal warnings will be issued to non-compliant users until September 1, 2022 after which more formal action will be taken. Stephen Jurss Birck Safety Manager Dear Birck Users: In an effort to comply with university policy and OSHA regulation Birck is making access to Safety Data Sheets available via QR codes located on the laboratory hoods. Please be aware we are removing hardcopy binders from various locations throughout the facility. Please note: SDS’s will still be required with all chemical orders. [cid:image004.png@01D85359.518DEC80] Stephen Jurss Birck Safety Manger Birck Events<https://www.purdue.edu/discoverypark/birck/events/index.php> and Birck News<https://www.purdue.edu/discoverypark/birck/news/index.php> NSAC Fab Forum None NSAC Coffee Hour None Birck Nanotechnology Center Advanced Capabilities Keyence 950F Digital Microscope<https://wiki.itap.purdue.edu/display/BNCWiki/Keyence+VHX-950F+Digital+Micro…> [cid:image017.jpg@01D8B3BF.33698B30] Features: Two lenses with magnification from 20x to 2000x Anti-vibration control Multiple image viewing options and 3D viewing and measuring Location: Cleanroom N Bay Contact: Bill Rowe (wrowe(a)purdue.edu)<mailto:wrowe@purdue.edu> Please visit the Birck Wiki to learn about the wide array of fabrication and characterization equipment at the facility<https://wiki.itap.purdue.edu/display/BNCWiki/> ***To post an announcement in the weekly BNC E-news please send to Sangeeta Abrol @ abrols(a)purdue.edu***<mailto:abrols@purdue.edu***> Follow us on Facebook and Twitter [Facebook icon]<https://www.facebook.com/nano.purdue.edu/> [Twitter icon] <https://twitter.com/BNCPurdue>

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Upcoming Seminar
by Abrol, Sangeeta Saddul 19 Aug '22

19 Aug '22

Dear All – Please be advised of an upcoming seminar by that might be of interest to you by Dr. Mohammad J. Bereyhi, École Polytechnique Fédérale de Lausanne (EPFL) Laboratory of Photonics and Quantum Measurements, Switzerland. Date : Friday 8/26/2022 Time: 10:00am‐11:00 am, 8/26/2022, Friday In Person: BRK_1001 Topic : Sub‐wavelength soft‐clamping: monolithic quantum optomechanical transducers at room temperature Best, Sangeeta Abrol Lead Administrative Assistant to the Director | Birck Nanotechnology Center 1205 West State St | West Lafayette, IN 47907 abrols(a)purdue.edu<mailto:abrols@purdue.edu> |purdue.edu/discoverypark/birck<http://purdue.edu/discoverypark/birck> o: 765-494 3509 | BRK 1027 [cid:image001.png@01D5E1BC.DCF172D0]

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Pico-Seminar: Dr. Sean Molesky, August 19th, 2022 at 10 am
by Abrol, Sangeeta Saddul 19 Aug '22

19 Aug '22

Sent on behalf of Prof. Zubin Jacob and Sathwik Bharadwaj Dear All - Please find the attached details of our next speaker in the pico-seminar series: Dr. Sean Molesky from Polytechnique Montreal from Canada. The talk will be live streamed and posted on our YouTube channel: https://www.youtube.com/channel/UCAwzWog7PqFw5R0q90KI6KQ Dr. Molesky is an expert in computational electromagnetics and inverse design techniques. He will discuss a dual perspective on inverse design. Please join us online on Friday August 19th at 10 am EST. If anyone would like to join the discussion after the seminar, please email me at sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu>. Thanks! Regards, Sathwik Bharadwaj Zubin Jacob ------------------------------------------------------------------------------------------------------------------------------ Sathwik Bharadwaj Postdoctoral Research Associate Birck Nanotechnology Center Purdue University, West Lafayette, IN 47906 Email: sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu>

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Pico-Seminar: Prof. Barry Bradlyn, University of Illinois Urbana-Champaign, USA on Friday at 10am
by Abrol, Sangeeta Saddul 10 Aug '22

10 Aug '22

Sent on behalf of Prof. Zubin Jacob and Sathwik Bharadwaj Dear All - We recently launched the Pico-Electrodynamics Theory Network (https://picoelectrodynamics.org/) Our theory network brings together diverse researchers from around the world to explore light-matter interaction at the pico-scopic atomistic level. We are hosting an online seminar series to showcase the work from theorists working on pico-photonics, topological band theory, quantum materials and computational many body physics. These talks will be live streamed and posted on our YouTube channel: https://www.youtube.com/channel/UCAwzWog7PqFw5R0q90KI6KQ Our next speaker is an expert in theoretical condensed matter physics and topological physics, Prof. Barry Bradlyn from University of Illinois Urbana-Champaign, USA. He will discuss key recent advancements in higher-order magnetic and nonmagnetic topological insulators. Please join us online on Friday August 12th at 10 am EST. The enclosed poster includes the title, abstract, and a bio of Prof. Barry Bradlyn. If anyone would like to join the discussion after the seminar, please email me at sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu>. Thanks! Regards, Sathwik Bharadwaj Zubin Jacob ------------------------------------------------------------------------------------------------------------------------------ Sathwik Bharadwaj Postdoctoral Research Associate Birck Nanotechnology Center Purdue University, West Lafayette, IN 47906 Email: sdaralag(a)purdue.edu<mailto:sdaralag@purdue.edu>

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Upcoming Seminar - Dr. Pedro J. de Pablo
by Abrol, Sangeeta Saddul 03 Aug '22

03 Aug '22

Dear All - Please be advised of an upcoming seminar by Dr. Pedro J. de Pablo from Universidad Autónoma de Madrid, UAM Campus 28049, Madrid that might be of interest to you: Topic : Probing the biomechanics of SARS-CoV-2 surrogates using AFM Date : Friday August 5th, 2022 Time : 3:00pm - 4:00pm In Person: BRK_1001 Virtual Link : https://purdue-edu.zoom.us/j/91088685840 Please reach out to Arvind Raman raman(a)purdue.edu<mailto:raman@purdue.edu> if you would like to meet Dr. Pedro J. de Pablo after the talk. Thanks, Best, Sangeeta Abrol Lead Administrative Assistant to the Director | Birck Nanotechnology Center 1205 West State St | West Lafayette, IN 47907 abrols(a)purdue.edu<mailto:abrols@purdue.edu> |purdue.edu/discoverypark/birck<http://purdue.edu/discoverypark/birck> o: 765-494 3509 | BRK 1027 [cid:image001.png@01D5E1BC.DCF172D0]

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REMINDER: Seminar: HYDRODYNAMIC PHENOMENA IN THERMAL TRANSPORT
by Abrol, Sangeeta Saddul 25 Jul '22

25 Jul '22

Sent on behalf of Ali Shakouri. Dear Colleagues, Next week Prof. Xavier Alvarez from Univ. Autonoma in Barcelona is visiting us and will be at the Birck center on July 25-29. He is an expert in extended thermodynamics and transport (heat, sound). His recent research has focused on phonon hydrodynamics, quasi ballistic effects and the observation of 2nd sound. He will give a seminar (see below the abstract) on Tuesday July 26th from 1:00pm-2:00pm in BRK 1001. Please let me know if you would be interested to meet with Prof. Alvarez next week. Best regards, Ali Shakouri ************* TITLE: HYDRODYNAMIC PHENOMENA IN THERMAL TRANSPORT Xavier Alvarez Universitat Autònoma de Barcelona ABSTRACT: A large number of experimental observations incompatible with the classical Fourier description of thermal transport at the nanometer and in the picosecond scales has been reported in the last decade. Despite the theoretical efforts done in the topic, a model able to describe the gathered data at all length and time scales is still not available. Two different descriptions have been proposed. Phonon hydrodynamics has been used as a framework to model thermal transport in materials where momentum conservation in phonon-phonon collisions is important. For other situations, a kinetic description based on the propagation of independent phonons, in what is called quasiballistic description, has been developed. The fundamental difference between them is in the number of length or time scales required to describe the observations. While in the hydrodynamic approach, a single scale is enough, in the quasiballistic description, the full set of phonon scales is necessary. For graphene and other 2D materials, the hydrodynamic approach has been the traditional main stream, while the quasiballistic approach has been more used for classical bulk semiconductors. In the last years, some experiments and theoretical descriptions seems to be challenging this traditional splitting. On the one side, some predictions of the hydrodynamic regime for 2D materials like the second sound velocity have put on doubt the standard approach. On the other side, collective phonon behavior like the use of a single time scale to describe thermal decay in a silicon substrate or the observation of second sound in germanium seem to indicate that the hydrodynamic description could be used in these semiconductors. This could be an indication that a more unified framework could be proposed. The talk will cover some of the most recent evidences in the theoretical and experimental research on thermal transport and we will analyze them in the framework of the Kinetic/Collective model (KCM), developed to give a more generalized framework to describe thermal experiments.

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